title: Comparison of the efficacy of tenofovir and adefovir in the treatment of chronic hepatitis B: a systematic review.
abstract: Chronic viral hepatitis B remains a global public health concern. Currently, several drugs, such as tenofovir and adefovir, are recommended for treatment of patients with chronic hepatitis B. tenofovir is a nucleoside analog with selective activity against hepatitis b virus and has been shown to be more potent in vitro than adefovir. But the results of trials comparing tenofovir and adefovir in the treatment of chronic hepatitis B were inconsistent. However, there was no systematic review on the comparison of the efficacy of tenofovir and adefovir in the treatment of chronic hepatitis B. To evaluate the comparison of the efficacy of tenofovir and adefovir in the treatment of chronic hepatitis B we conducted a systematic review and meta-analysis of clinical trials. We searched PUBMED, Web of Science, EMBASE, CNKI, VIP database, WANFANG database, the Cochrane Central Register of Controlled Trials and the Cochrane Database of Systematic Review. Finally six studies were left for analysis which involved 910 patients in total, of whom 576 were included in tenofovir groups and 334 were included in adefovir groups. At the end of 48-week treatment, tenofovir was superior to adefovir at the HBV-DNA suppression in patients[RR = 2.59; 95%CI(1.01-6.67), P = 0.05]. While there was no significant difference in the ALT normalization[RR = 1.15; 95%CI(0.96-1.37), P = 0.14], HBeAg seroconversion[RR = 1.32; 95%CI(1.00-1.75), P = 0.05] and HBsAg loss rate[RR = 1.19; 95%CI(0.74-1.91), P = 0.48]. More high-quality, well-designed, randomized controlled, multi-center trails are clearly needed to guide evolving standards of care for chronic hepatitis B.
authors.affiliation: Department of Infectious Diseases, Xiangya Hospital, Central South University, Changsha, Hunan, PR China.
authors.forename: Shu-Shan
authors.initials: SS
authors.lastname: Zhao
authors.forename: Lan-Hua
authors.initials: LH
authors.lastname: Tang
authors.forename: Xia-Hong
authors.initials: XH
authors.lastname: Dai
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Rong-Rong
authors.initials: RR
authors.lastname: Zhou
authors.forename: Li-Zhang
authors.initials: LZ
authors.lastname: Chen
authors.forename: Xue-Gong
authors.initials: XG
authors.lastname: Fan
mesh_terms: D000225:Adenine / Q000008:administration & dosage / Q000031:analogs & derivatives*; D000998:Antiviral Agents / Q000008:administration & dosage*; D018849:Controlled Clinical Trials as Topic; D006515:Hepatitis B virus / Q000187:drug effects; D019694:Hepatitis B, Chronic / Q000188:drug therapy* / Q000821:virology; D006801:Humans; D063065:Organophosphonates / Q000008:administration & dosage*; D000068698:Tenofovir; D016896:Treatment Outcome
chemical_list: D000998:Antiviral Agents; D063065:Organophosphonates; C053001:adefovir; D000068698:Tenofovir; D000225:Adenine